include/uapi/linux/netfilter/nf_tables.h

   1 #ifndef _LINUX_NF_TABLES_H
   2 #define _LINUX_NF_TABLES_H
   3
   4 #define NFT_TABLE_MAXNAMELEN    32
   5 #define NFT_CHAIN_MAXNAMELEN    32
   6 #define NFT_SET_MAXNAMELEN      32
   7 #define NFT_OBJ_MAXNAMELEN      32
   8 #define NFT_USERDATA_MAXLEN     256
   9
  10 /**
  11  * enum nft_registers - nf_tables registers
  12  *
  13  * nf_tables used to have five registers: a verdict register and four data
  14  * registers of size 16. The data registers have been changed to 16 registers
  15  * of size 4. For compatibility reasons, the NFT_REG_[1-4] registers still
  16  * map to areas of size 16, the 4 byte registers are addressed using
  17  * NFT_REG32_00 - NFT_REG32_15.
  18  */
  19 enum nft_registers {
  20         NFT_REG_VERDICT,
  21         NFT_REG_1,
  22         NFT_REG_2,
  23         NFT_REG_3,
  24         NFT_REG_4,
  25         __NFT_REG_MAX,
  26
  27         NFT_REG32_00    = 8,
  28         NFT_REG32_01,
  29         NFT_REG32_02,
  30         NFT_REG32_03,
  31         NFT_REG32_04,
  32         NFT_REG32_05,
  33         NFT_REG32_06,
  34         NFT_REG32_07,
  35         NFT_REG32_08,
  36         NFT_REG32_09,
  37         NFT_REG32_10,
  38         NFT_REG32_11,
  39         NFT_REG32_12,
  40         NFT_REG32_13,
  41         NFT_REG32_14,
  42         NFT_REG32_15,
  43 };
  44 #define NFT_REG_MAX     (__NFT_REG_MAX - 1)
  45
  46 #define NFT_REG_SIZE    16
  47 #define NFT_REG32_SIZE  4
  48
  49 /**
  50  * enum nft_verdicts - nf_tables internal verdicts
  51  *
  52  * @NFT_CONTINUE: continue evaluation of the current rule
  53  * @NFT_BREAK: terminate evaluation of the current rule
  54  * @NFT_JUMP: push the current chain on the jump stack and jump to a chain
  55  * @NFT_GOTO: jump to a chain without pushing the current chain on the jump stack
  56  * @NFT_RETURN: return to the topmost chain on the jump stack
  57  *
  58  * The nf_tables verdicts share their numeric space with the netfilter verdicts.
  59  */
  60 enum nft_verdicts {
  61         NFT_CONTINUE    = -1,
  62         NFT_BREAK       = -2,
  63         NFT_JUMP        = -3,
  64         NFT_GOTO        = -4,
  65         NFT_RETURN      = -5,
  66 };
  67
  68 /**
  69  * enum nf_tables_msg_types - nf_tables netlink message types
  70  *
  71  * @NFT_MSG_NEWTABLE: create a new table (enum nft_table_attributes)
  72  * @NFT_MSG_GETTABLE: get a table (enum nft_table_attributes)
  73  * @NFT_MSG_DELTABLE: delete a table (enum nft_table_attributes)
  74  * @NFT_MSG_NEWCHAIN: create a new chain (enum nft_chain_attributes)
  75  * @NFT_MSG_GETCHAIN: get a chain (enum nft_chain_attributes)
  76  * @NFT_MSG_DELCHAIN: delete a chain (enum nft_chain_attributes)
  77  * @NFT_MSG_NEWRULE: create a new rule (enum nft_rule_attributes)
  78  * @NFT_MSG_GETRULE: get a rule (enum nft_rule_attributes)
  79  * @NFT_MSG_DELRULE: delete a rule (enum nft_rule_attributes)
  80  * @NFT_MSG_NEWSET: create a new set (enum nft_set_attributes)
  81  * @NFT_MSG_GETSET: get a set (enum nft_set_attributes)
  82  * @NFT_MSG_DELSET: delete a set (enum nft_set_attributes)
  83  * @NFT_MSG_NEWSETELEM: create a new set element (enum nft_set_elem_attributes)
  84  * @NFT_MSG_GETSETELEM: get a set element (enum nft_set_elem_attributes)
  85  * @NFT_MSG_DELSETELEM: delete a set element (enum nft_set_elem_attributes)
  86  * @NFT_MSG_NEWGEN: announce a new generation, only for events (enum nft_gen_attributes)
  87  * @NFT_MSG_GETGEN: get the rule-set generation (enum nft_gen_attributes)
  88  * @NFT_MSG_TRACE: trace event (enum nft_trace_attributes)
  89  * @NFT_MSG_NEWOBJ: create a stateful object (enum nft_obj_attributes)
  90  * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
  91  * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
  92  */
  93 enum nf_tables_msg_types {
  94         NFT_MSG_NEWTABLE,
  95         NFT_MSG_GETTABLE,
  96         NFT_MSG_DELTABLE,
  97         NFT_MSG_NEWCHAIN,
  98         NFT_MSG_GETCHAIN,
  99         NFT_MSG_DELCHAIN,
 100         NFT_MSG_NEWRULE,
 101         NFT_MSG_GETRULE,
 102         NFT_MSG_DELRULE,
 103         NFT_MSG_NEWSET,
 104         NFT_MSG_GETSET,
 105         NFT_MSG_DELSET,
 106         NFT_MSG_NEWSETELEM,
 107         NFT_MSG_GETSETELEM,
 108         NFT_MSG_DELSETELEM,
 109         NFT_MSG_NEWGEN,
 110         NFT_MSG_GETGEN,
 111         NFT_MSG_TRACE,
 112         NFT_MSG_NEWOBJ,
 113         NFT_MSG_GETOBJ,
 114         NFT_MSG_DELOBJ,
 115         NFT_MSG_MAX,
 116 };
 117
 118 /**
 119  * enum nft_list_attributes - nf_tables generic list netlink attributes
 120  *
 121  * @NFTA_LIST_ELEM: list element (NLA_NESTED)
 122  */
 123 enum nft_list_attributes {
 124         NFTA_LIST_UNPEC,
 125         NFTA_LIST_ELEM,
 126         __NFTA_LIST_MAX
 127 };
 128 #define NFTA_LIST_MAX           (__NFTA_LIST_MAX - 1)
 129
 130 /**
 131  * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
 132  *
 133  * @NFTA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
 134  * @NFTA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
 135  * @NFTA_HOOK_DEV: netdevice name (NLA_STRING)
 136  */
 137 enum nft_hook_attributes {
 138         NFTA_HOOK_UNSPEC,
 139         NFTA_HOOK_HOOKNUM,
 140         NFTA_HOOK_PRIORITY,
 141         NFTA_HOOK_DEV,
 142         __NFTA_HOOK_MAX
 143 };
 144 #define NFTA_HOOK_MAX           (__NFTA_HOOK_MAX - 1)
 145
 146 /**
 147  * enum nft_table_flags - nf_tables table flags
 148  *
 149  * @NFT_TABLE_F_DORMANT: this table is not active
 150  */
 151 enum nft_table_flags {
 152         NFT_TABLE_F_DORMANT     = 0x1,
 153 };
 154
 155 /**
 156  * enum nft_table_attributes - nf_tables table netlink attributes
 157  *
 158  * @NFTA_TABLE_NAME: name of the table (NLA_STRING)
 159  * @NFTA_TABLE_FLAGS: bitmask of enum nft_table_flags (NLA_U32)
 160  * @NFTA_TABLE_USE: number of chains in this table (NLA_U32)
 161  */
 162 enum nft_table_attributes {
 163         NFTA_TABLE_UNSPEC,
 164         NFTA_TABLE_NAME,
 165         NFTA_TABLE_FLAGS,
 166         NFTA_TABLE_USE,
 167         __NFTA_TABLE_MAX
 168 };
 169 #define NFTA_TABLE_MAX          (__NFTA_TABLE_MAX - 1)
 170
 171 /**
 172  * enum nft_chain_attributes - nf_tables chain netlink attributes
 173  *
 174  * @NFTA_CHAIN_TABLE: name of the table containing the chain (NLA_STRING)
 175  * @NFTA_CHAIN_HANDLE: numeric handle of the chain (NLA_U64)
 176  * @NFTA_CHAIN_NAME: name of the chain (NLA_STRING)
 177  * @NFTA_CHAIN_HOOK: hook specification for basechains (NLA_NESTED: nft_hook_attributes)
 178  * @NFTA_CHAIN_POLICY: numeric policy of the chain (NLA_U32)
 179  * @NFTA_CHAIN_USE: number of references to this chain (NLA_U32)
 180  * @NFTA_CHAIN_TYPE: type name of the string (NLA_NUL_STRING)
 181  * @NFTA_CHAIN_COUNTERS: counter specification of the chain (NLA_NESTED: nft_counter_attributes)
 182  */
 183 enum nft_chain_attributes {
 184         NFTA_CHAIN_UNSPEC,
 185         NFTA_CHAIN_TABLE,
 186         NFTA_CHAIN_HANDLE,
 187         NFTA_CHAIN_NAME,
 188         NFTA_CHAIN_HOOK,
 189         NFTA_CHAIN_POLICY,
 190         NFTA_CHAIN_USE,
 191         NFTA_CHAIN_TYPE,
 192         NFTA_CHAIN_COUNTERS,
 193         NFTA_CHAIN_PAD,
 194         __NFTA_CHAIN_MAX
 195 };
 196 #define NFTA_CHAIN_MAX          (__NFTA_CHAIN_MAX - 1)
 197
 198 /**
 199  * enum nft_rule_attributes - nf_tables rule netlink attributes
 200  *
 201  * @NFTA_RULE_TABLE: name of the table containing the rule (NLA_STRING)
 202  * @NFTA_RULE_CHAIN: name of the chain containing the rule (NLA_STRING)
 203  * @NFTA_RULE_HANDLE: numeric handle of the rule (NLA_U64)
 204  * @NFTA_RULE_EXPRESSIONS: list of expressions (NLA_NESTED: nft_expr_attributes)
 205  * @NFTA_RULE_COMPAT: compatibility specifications of the rule (NLA_NESTED: nft_rule_compat_attributes)
 206  * @NFTA_RULE_POSITION: numeric handle of the previous rule (NLA_U64)
 207  * @NFTA_RULE_USERDATA: user data (NLA_BINARY, NFT_USERDATA_MAXLEN)
 208  */
 209 enum nft_rule_attributes {
 210         NFTA_RULE_UNSPEC,
 211         NFTA_RULE_TABLE,
 212         NFTA_RULE_CHAIN,
 213         NFTA_RULE_HANDLE,
 214         NFTA_RULE_EXPRESSIONS,
 215         NFTA_RULE_COMPAT,
 216         NFTA_RULE_POSITION,
 217         NFTA_RULE_USERDATA,
 218         NFTA_RULE_PAD,
 219         __NFTA_RULE_MAX
 220 };
 221 #define NFTA_RULE_MAX           (__NFTA_RULE_MAX - 1)
 222
 223 /**
 224  * enum nft_rule_compat_flags - nf_tables rule compat flags
 225  *
 226  * @NFT_RULE_COMPAT_F_INV: invert the check result
 227  */
 228 enum nft_rule_compat_flags {
 229         NFT_RULE_COMPAT_F_INV   = (1 << 1),
 230         NFT_RULE_COMPAT_F_MASK  = NFT_RULE_COMPAT_F_INV,
 231 };
 232
 233 /**
 234  * enum nft_rule_compat_attributes - nf_tables rule compat attributes
 235  *
 236  * @NFTA_RULE_COMPAT_PROTO: numerice value of handled protocol (NLA_U32)
 237  * @NFTA_RULE_COMPAT_FLAGS: bitmask of enum nft_rule_compat_flags (NLA_U32)
 238  */
 239 enum nft_rule_compat_attributes {
 240         NFTA_RULE_COMPAT_UNSPEC,
 241         NFTA_RULE_COMPAT_PROTO,
 242         NFTA_RULE_COMPAT_FLAGS,
 243         __NFTA_RULE_COMPAT_MAX
 244 };
 245 #define NFTA_RULE_COMPAT_MAX    (__NFTA_RULE_COMPAT_MAX - 1)
 246
 247 /**
 248  * enum nft_set_flags - nf_tables set flags
 249  *
 250  * @NFT_SET_ANONYMOUS: name allocation, automatic cleanup on unlink
 251  * @NFT_SET_CONSTANT: set contents may not change while bound
 252  * @NFT_SET_INTERVAL: set contains intervals
 253  * @NFT_SET_MAP: set is used as a dictionary
 254  * @NFT_SET_TIMEOUT: set uses timeouts
 255  * @NFT_SET_EVAL: set contains expressions for evaluation
 256  */
 257 enum nft_set_flags {
 258         NFT_SET_ANONYMOUS               = 0x1,
 259         NFT_SET_CONSTANT                = 0x2,
 260         NFT_SET_INTERVAL                = 0x4,
 261         NFT_SET_MAP                     = 0x8,
 262         NFT_SET_TIMEOUT                 = 0x10,
 263         NFT_SET_EVAL                    = 0x20,
 264 };
 265
 266 /**
 267  * enum nft_set_policies - set selection policy
 268  *
 269  * @NFT_SET_POL_PERFORMANCE: prefer high performance over low memory use
 270  * @NFT_SET_POL_MEMORY: prefer low memory use over high performance
 271  */
 272 enum nft_set_policies {
 273         NFT_SET_POL_PERFORMANCE,
 274         NFT_SET_POL_MEMORY,
 275 };
 276
 277 /**
 278  * enum nft_set_desc_attributes - set element description
 279  *
 280  * @NFTA_SET_DESC_SIZE: number of elements in set (NLA_U32)
 281  */
 282 enum nft_set_desc_attributes {
 283         NFTA_SET_DESC_UNSPEC,
 284         NFTA_SET_DESC_SIZE,
 285         __NFTA_SET_DESC_MAX
 286 };
 287 #define NFTA_SET_DESC_MAX       (__NFTA_SET_DESC_MAX - 1)
 288
 289 /**
 290  * enum nft_set_attributes - nf_tables set netlink attributes
 291  *
 292  * @NFTA_SET_TABLE: table name (NLA_STRING)
 293  * @NFTA_SET_NAME: set name (NLA_STRING)
 294  * @NFTA_SET_FLAGS: bitmask of enum nft_set_flags (NLA_U32)
 295  * @NFTA_SET_KEY_TYPE: key data type, informational purpose only (NLA_U32)
 296  * @NFTA_SET_KEY_LEN: key data length (NLA_U32)
 297  * @NFTA_SET_DATA_TYPE: mapping data type (NLA_U32)
 298  * @NFTA_SET_DATA_LEN: mapping data length (NLA_U32)
 299  * @NFTA_SET_POLICY: selection policy (NLA_U32)
 300  * @NFTA_SET_DESC: set description (NLA_NESTED)
 301  * @NFTA_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 302  * @NFTA_SET_TIMEOUT: default timeout value (NLA_U64)
 303  * @NFTA_SET_GC_INTERVAL: garbage collection interval (NLA_U32)
 304  * @NFTA_SET_USERDATA: user data (NLA_BINARY)
 305  */
 306 enum nft_set_attributes {
 307         NFTA_SET_UNSPEC,
 308         NFTA_SET_TABLE,
 309         NFTA_SET_NAME,
 310         NFTA_SET_FLAGS,
 311         NFTA_SET_KEY_TYPE,
 312         NFTA_SET_KEY_LEN,
 313         NFTA_SET_DATA_TYPE,
 314         NFTA_SET_DATA_LEN,
 315         NFTA_SET_POLICY,
 316         NFTA_SET_DESC,
 317         NFTA_SET_ID,
 318         NFTA_SET_TIMEOUT,
 319         NFTA_SET_GC_INTERVAL,
 320         NFTA_SET_USERDATA,
 321         NFTA_SET_PAD,
 322         __NFTA_SET_MAX
 323 };
 324 #define NFTA_SET_MAX            (__NFTA_SET_MAX - 1)
 325
 326 /**
 327  * enum nft_set_elem_flags - nf_tables set element flags
 328  *
 329  * @NFT_SET_ELEM_INTERVAL_END: element ends the previous interval
 330  */
 331 enum nft_set_elem_flags {
 332         NFT_SET_ELEM_INTERVAL_END       = 0x1,
 333 };
 334
 335 /**
 336  * enum nft_set_elem_attributes - nf_tables set element netlink attributes
 337  *
 338  * @NFTA_SET_ELEM_KEY: key value (NLA_NESTED: nft_data)
 339  * @NFTA_SET_ELEM_DATA: data value of mapping (NLA_NESTED: nft_data_attributes)
 340  * @NFTA_SET_ELEM_FLAGS: bitmask of nft_set_elem_flags (NLA_U32)
 341  * @NFTA_SET_ELEM_TIMEOUT: timeout value (NLA_U64)
 342  * @NFTA_SET_ELEM_EXPIRATION: expiration time (NLA_U64)
 343  * @NFTA_SET_ELEM_USERDATA: user data (NLA_BINARY)
 344  * @NFTA_SET_ELEM_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 345  */
 346 enum nft_set_elem_attributes {
 347         NFTA_SET_ELEM_UNSPEC,
 348         NFTA_SET_ELEM_KEY,
 349         NFTA_SET_ELEM_DATA,
 350         NFTA_SET_ELEM_FLAGS,
 351         NFTA_SET_ELEM_TIMEOUT,
 352         NFTA_SET_ELEM_EXPIRATION,
 353         NFTA_SET_ELEM_USERDATA,
 354         NFTA_SET_ELEM_EXPR,
 355         NFTA_SET_ELEM_PAD,
 356         __NFTA_SET_ELEM_MAX
 357 };
 358 #define NFTA_SET_ELEM_MAX       (__NFTA_SET_ELEM_MAX - 1)
 359
 360 /**
 361  * enum nft_set_elem_list_attributes - nf_tables set element list netlink attributes
 362  *
 363  * @NFTA_SET_ELEM_LIST_TABLE: table of the set to be changed (NLA_STRING)
 364  * @NFTA_SET_ELEM_LIST_SET: name of the set to be changed (NLA_STRING)
 365  * @NFTA_SET_ELEM_LIST_ELEMENTS: list of set elements (NLA_NESTED: nft_set_elem_attributes)
 366  * @NFTA_SET_ELEM_LIST_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 367  */
 368 enum nft_set_elem_list_attributes {
 369         NFTA_SET_ELEM_LIST_UNSPEC,
 370         NFTA_SET_ELEM_LIST_TABLE,
 371         NFTA_SET_ELEM_LIST_SET,
 372         NFTA_SET_ELEM_LIST_ELEMENTS,
 373         NFTA_SET_ELEM_LIST_SET_ID,
 374         __NFTA_SET_ELEM_LIST_MAX
 375 };
 376 #define NFTA_SET_ELEM_LIST_MAX  (__NFTA_SET_ELEM_LIST_MAX - 1)
 377
 378 /**
 379  * enum nft_data_types - nf_tables data types
 380  *
 381  * @NFT_DATA_VALUE: generic data
 382  * @NFT_DATA_VERDICT: netfilter verdict
 383  *
 384  * The type of data is usually determined by the kernel directly and is not
 385  * explicitly specified by userspace. The only difference are sets, where
 386  * userspace specifies the key and mapping data types.
 387  *
 388  * The values 0xffffff00-0xffffffff are reserved for internally used types.
 389  * The remaining range can be freely used by userspace to encode types, all
 390  * values are equivalent to NFT_DATA_VALUE.
 391  */
 392 enum nft_data_types {
 393         NFT_DATA_VALUE,
 394         NFT_DATA_VERDICT        = 0xffffff00U,
 395 };
 396
 397 #define NFT_DATA_RESERVED_MASK  0xffffff00U
 398
 399 /**
 400  * enum nft_data_attributes - nf_tables data netlink attributes
 401  *
 402  * @NFTA_DATA_VALUE: generic data (NLA_BINARY)
 403  * @NFTA_DATA_VERDICT: nf_tables verdict (NLA_NESTED: nft_verdict_attributes)
 404  */
 405 enum nft_data_attributes {
 406         NFTA_DATA_UNSPEC,
 407         NFTA_DATA_VALUE,
 408         NFTA_DATA_VERDICT,
 409         __NFTA_DATA_MAX
 410 };
 411 #define NFTA_DATA_MAX           (__NFTA_DATA_MAX - 1)
 412
 413 /* Maximum length of a value */
 414 #define NFT_DATA_VALUE_MAXLEN   64
 415
 416 /**
 417  * enum nft_verdict_attributes - nf_tables verdict netlink attributes
 418  *
 419  * @NFTA_VERDICT_CODE: nf_tables verdict (NLA_U32: enum nft_verdicts)
 420  * @NFTA_VERDICT_CHAIN: jump target chain name (NLA_STRING)
 421  */
 422 enum nft_verdict_attributes {
 423         NFTA_VERDICT_UNSPEC,
 424         NFTA_VERDICT_CODE,
 425         NFTA_VERDICT_CHAIN,
 426         __NFTA_VERDICT_MAX
 427 };
 428 #define NFTA_VERDICT_MAX        (__NFTA_VERDICT_MAX - 1)
 429
 430 /**
 431  * enum nft_expr_attributes - nf_tables expression netlink attributes
 432  *
 433  * @NFTA_EXPR_NAME: name of the expression type (NLA_STRING)
 434  * @NFTA_EXPR_DATA: type specific data (NLA_NESTED)
 435  */
 436 enum nft_expr_attributes {
 437         NFTA_EXPR_UNSPEC,
 438         NFTA_EXPR_NAME,
 439         NFTA_EXPR_DATA,
 440         __NFTA_EXPR_MAX
 441 };
 442 #define NFTA_EXPR_MAX           (__NFTA_EXPR_MAX - 1)
 443
 444 /**
 445  * enum nft_immediate_attributes - nf_tables immediate expression netlink attributes
 446  *
 447  * @NFTA_IMMEDIATE_DREG: destination register to load data into (NLA_U32)
 448  * @NFTA_IMMEDIATE_DATA: data to load (NLA_NESTED: nft_data_attributes)
 449  */
 450 enum nft_immediate_attributes {
 451         NFTA_IMMEDIATE_UNSPEC,
 452         NFTA_IMMEDIATE_DREG,
 453         NFTA_IMMEDIATE_DATA,
 454         __NFTA_IMMEDIATE_MAX
 455 };
 456 #define NFTA_IMMEDIATE_MAX      (__NFTA_IMMEDIATE_MAX - 1)
 457
 458 /**
 459  * enum nft_bitwise_attributes - nf_tables bitwise expression netlink attributes
 460  *
 461  * @NFTA_BITWISE_SREG: source register (NLA_U32: nft_registers)
 462  * @NFTA_BITWISE_DREG: destination register (NLA_U32: nft_registers)
 463  * @NFTA_BITWISE_LEN: length of operands (NLA_U32)
 464  * @NFTA_BITWISE_MASK: mask value (NLA_NESTED: nft_data_attributes)
 465  * @NFTA_BITWISE_XOR: xor value (NLA_NESTED: nft_data_attributes)
 466  *
 467  * The bitwise expression performs the following operation:
 468  *
 469  * dreg = (sreg & mask) ^ xor
 470  *
 471  * which allow to express all bitwise operations:
 472  *
 473  *              mask    xor
 474  * NOT:         1       1
 475  * OR:          0       x
 476  * XOR:         1       x
 477  * AND:         x       0
 478  */
 479 enum nft_bitwise_attributes {
 480         NFTA_BITWISE_UNSPEC,
 481         NFTA_BITWISE_SREG,
 482         NFTA_BITWISE_DREG,
 483         NFTA_BITWISE_LEN,
 484         NFTA_BITWISE_MASK,
 485         NFTA_BITWISE_XOR,
 486         __NFTA_BITWISE_MAX
 487 };
 488 #define NFTA_BITWISE_MAX        (__NFTA_BITWISE_MAX - 1)
 489
 490 /**
 491  * enum nft_byteorder_ops - nf_tables byteorder operators
 492  *
 493  * @NFT_BYTEORDER_NTOH: network to host operator
 494  * @NFT_BYTEORDER_HTON: host to network opertaor
 495  */
 496 enum nft_byteorder_ops {
 497         NFT_BYTEORDER_NTOH,
 498         NFT_BYTEORDER_HTON,
 499 };
 500
 501 /**
 502  * enum nft_byteorder_attributes - nf_tables byteorder expression netlink attributes
 503  *
 504  * @NFTA_BYTEORDER_SREG: source register (NLA_U32: nft_registers)
 505  * @NFTA_BYTEORDER_DREG: destination register (NLA_U32: nft_registers)
 506  * @NFTA_BYTEORDER_OP: operator (NLA_U32: enum nft_byteorder_ops)
 507  * @NFTA_BYTEORDER_LEN: length of the data (NLA_U32)
 508  * @NFTA_BYTEORDER_SIZE: data size in bytes (NLA_U32: 2 or 4)
 509  */
 510 enum nft_byteorder_attributes {
 511         NFTA_BYTEORDER_UNSPEC,
 512         NFTA_BYTEORDER_SREG,
 513         NFTA_BYTEORDER_DREG,
 514         NFTA_BYTEORDER_OP,
 515         NFTA_BYTEORDER_LEN,
 516         NFTA_BYTEORDER_SIZE,
 517         __NFTA_BYTEORDER_MAX
 518 };
 519 #define NFTA_BYTEORDER_MAX      (__NFTA_BYTEORDER_MAX - 1)
 520
 521 /**
 522  * enum nft_cmp_ops - nf_tables relational operator
 523  *
 524  * @NFT_CMP_EQ: equal
 525  * @NFT_CMP_NEQ: not equal
 526  * @NFT_CMP_LT: less than
 527  * @NFT_CMP_LTE: less than or equal to
 528  * @NFT_CMP_GT: greater than
 529  * @NFT_CMP_GTE: greater than or equal to
 530  */
 531 enum nft_cmp_ops {
 532         NFT_CMP_EQ,
 533         NFT_CMP_NEQ,
 534         NFT_CMP_LT,
 535         NFT_CMP_LTE,
 536         NFT_CMP_GT,
 537         NFT_CMP_GTE,
 538 };
 539
 540 /**
 541  * enum nft_cmp_attributes - nf_tables cmp expression netlink attributes
 542  *
 543  * @NFTA_CMP_SREG: source register of data to compare (NLA_U32: nft_registers)
 544  * @NFTA_CMP_OP: cmp operation (NLA_U32: nft_cmp_ops)
 545  * @NFTA_CMP_DATA: data to compare against (NLA_NESTED: nft_data_attributes)
 546  */
 547 enum nft_cmp_attributes {
 548         NFTA_CMP_UNSPEC,
 549         NFTA_CMP_SREG,
 550         NFTA_CMP_OP,
 551         NFTA_CMP_DATA,
 552         __NFTA_CMP_MAX
 553 };
 554 #define NFTA_CMP_MAX            (__NFTA_CMP_MAX - 1)
 555
 556 /**
 557  * enum nft_range_ops - nf_tables range operator
 558  *
 559  * @NFT_RANGE_EQ: equal
 560  * @NFT_RANGE_NEQ: not equal
 561  */
 562 enum nft_range_ops {
 563         NFT_RANGE_EQ,
 564         NFT_RANGE_NEQ,
 565 };
 566
 567 /**
 568  * enum nft_range_attributes - nf_tables range expression netlink attributes
 569  *
 570  * @NFTA_RANGE_SREG: source register of data to compare (NLA_U32: nft_registers)
 571  * @NFTA_RANGE_OP: cmp operation (NLA_U32: nft_cmp_ops)
 572  * @NFTA_RANGE_FROM_DATA: data range from (NLA_NESTED: nft_data_attributes)
 573  * @NFTA_RANGE_TO_DATA: data range to (NLA_NESTED: nft_data_attributes)
 574  */
 575 enum nft_range_attributes {
 576         NFTA_RANGE_UNSPEC,
 577         NFTA_RANGE_SREG,
 578         NFTA_RANGE_OP,
 579         NFTA_RANGE_FROM_DATA,
 580         NFTA_RANGE_TO_DATA,
 581         __NFTA_RANGE_MAX
 582 };
 583 #define NFTA_RANGE_MAX          (__NFTA_RANGE_MAX - 1)
 584
 585 enum nft_lookup_flags {
 586         NFT_LOOKUP_F_INV = (1 << 0),
 587 };
 588
 589 /**
 590  * enum nft_lookup_attributes - nf_tables set lookup expression netlink attributes
 591  *
 592  * @NFTA_LOOKUP_SET: name of the set where to look for (NLA_STRING)
 593  * @NFTA_LOOKUP_SREG: source register of the data to look for (NLA_U32: nft_registers)
 594  * @NFTA_LOOKUP_DREG: destination register (NLA_U32: nft_registers)
 595  * @NFTA_LOOKUP_SET_ID: uniquely identifies a set in a transaction (NLA_U32)
 596  * @NFTA_LOOKUP_FLAGS: flags (NLA_U32: enum nft_lookup_flags)
 597  */
 598 enum nft_lookup_attributes {
 599         NFTA_LOOKUP_UNSPEC,
 600         NFTA_LOOKUP_SET,
 601         NFTA_LOOKUP_SREG,
 602         NFTA_LOOKUP_DREG,
 603         NFTA_LOOKUP_SET_ID,
 604         NFTA_LOOKUP_FLAGS,
 605         __NFTA_LOOKUP_MAX
 606 };
 607 #define NFTA_LOOKUP_MAX         (__NFTA_LOOKUP_MAX - 1)
 608
 609 enum nft_dynset_ops {
 610         NFT_DYNSET_OP_ADD,
 611         NFT_DYNSET_OP_UPDATE,
 612 };
 613
 614 enum nft_dynset_flags {
 615         NFT_DYNSET_F_INV        = (1 << 0),
 616 };
 617
 618 /**
 619  * enum nft_dynset_attributes - dynset expression attributes
 620  *
 621  * @NFTA_DYNSET_SET_NAME: name of set the to add data to (NLA_STRING)
 622  * @NFTA_DYNSET_SET_ID: uniquely identifier of the set in the transaction (NLA_U32)
 623  * @NFTA_DYNSET_OP: operation (NLA_U32)
 624  * @NFTA_DYNSET_SREG_KEY: source register of the key (NLA_U32)
 625  * @NFTA_DYNSET_SREG_DATA: source register of the data (NLA_U32)
 626  * @NFTA_DYNSET_TIMEOUT: timeout value for the new element (NLA_U64)
 627  * @NFTA_DYNSET_EXPR: expression (NLA_NESTED: nft_expr_attributes)
 628  * @NFTA_DYNSET_FLAGS: flags (NLA_U32)
 629  */
 630 enum nft_dynset_attributes {
 631         NFTA_DYNSET_UNSPEC,
 632         NFTA_DYNSET_SET_NAME,
 633         NFTA_DYNSET_SET_ID,
 634         NFTA_DYNSET_OP,
 635         NFTA_DYNSET_SREG_KEY,
 636         NFTA_DYNSET_SREG_DATA,
 637         NFTA_DYNSET_TIMEOUT,
 638         NFTA_DYNSET_EXPR,
 639         NFTA_DYNSET_PAD,
 640         NFTA_DYNSET_FLAGS,
 641         __NFTA_DYNSET_MAX,
 642 };
 643 #define NFTA_DYNSET_MAX         (__NFTA_DYNSET_MAX - 1)
 644
 645 /**
 646  * enum nft_payload_bases - nf_tables payload expression offset bases
 647  *
 648  * @NFT_PAYLOAD_LL_HEADER: link layer header
 649  * @NFT_PAYLOAD_NETWORK_HEADER: network header
 650  * @NFT_PAYLOAD_TRANSPORT_HEADER: transport header
 651  */
 652 enum nft_payload_bases {
 653         NFT_PAYLOAD_LL_HEADER,
 654         NFT_PAYLOAD_NETWORK_HEADER,
 655         NFT_PAYLOAD_TRANSPORT_HEADER,
 656 };
 657
 658 /**
 659  * enum nft_payload_csum_types - nf_tables payload expression checksum types
 660  *
 661  * @NFT_PAYLOAD_CSUM_NONE: no checksumming
 662  * @NFT_PAYLOAD_CSUM_INET: internet checksum (RFC 791)
 663  */
 664 enum nft_payload_csum_types {
 665         NFT_PAYLOAD_CSUM_NONE,
 666         NFT_PAYLOAD_CSUM_INET,
 667 };
 668
 669 enum nft_payload_csum_flags {
 670         NFT_PAYLOAD_L4CSUM_PSEUDOHDR = (1 << 0),
 671 };
 672
 673 /**
 674  * enum nft_payload_attributes - nf_tables payload expression netlink attributes
 675  *
 676  * @NFTA_PAYLOAD_DREG: destination register to load data into (NLA_U32: nft_registers)
 677  * @NFTA_PAYLOAD_BASE: payload base (NLA_U32: nft_payload_bases)
 678  * @NFTA_PAYLOAD_OFFSET: payload offset relative to base (NLA_U32)
 679  * @NFTA_PAYLOAD_LEN: payload length (NLA_U32)
 680  * @NFTA_PAYLOAD_SREG: source register to load data from (NLA_U32: nft_registers)
 681  * @NFTA_PAYLOAD_CSUM_TYPE: checksum type (NLA_U32)
 682  * @NFTA_PAYLOAD_CSUM_OFFSET: checksum offset relative to base (NLA_U32)
 683  * @NFTA_PAYLOAD_CSUM_FLAGS: checksum flags (NLA_U32)
 684  */
 685 enum nft_payload_attributes {
 686         NFTA_PAYLOAD_UNSPEC,
 687         NFTA_PAYLOAD_DREG,
 688         NFTA_PAYLOAD_BASE,
 689         NFTA_PAYLOAD_OFFSET,
 690         NFTA_PAYLOAD_LEN,
 691         NFTA_PAYLOAD_SREG,
 692         NFTA_PAYLOAD_CSUM_TYPE,
 693         NFTA_PAYLOAD_CSUM_OFFSET,
 694         NFTA_PAYLOAD_CSUM_FLAGS,
 695         __NFTA_PAYLOAD_MAX
 696 };
 697 #define NFTA_PAYLOAD_MAX        (__NFTA_PAYLOAD_MAX - 1)
 698
 699 /**
 700  * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes
 701  *
 702  * @NFTA_EXTHDR_DREG: destination register (NLA_U32: nft_registers)
 703  * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8)
 704  * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
 705  * @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
 706  */
 707 enum nft_exthdr_attributes {
 708         NFTA_EXTHDR_UNSPEC,
 709         NFTA_EXTHDR_DREG,
 710         NFTA_EXTHDR_TYPE,
 711         NFTA_EXTHDR_OFFSET,
 712         NFTA_EXTHDR_LEN,
 713         __NFTA_EXTHDR_MAX
 714 };
 715 #define NFTA_EXTHDR_MAX         (__NFTA_EXTHDR_MAX - 1)
 716
 717 /**
 718  * enum nft_meta_keys - nf_tables meta expression keys
 719  *
 720  * @NFT_META_LEN: packet length (skb->len)
 721  * @NFT_META_PROTOCOL: packet ethertype protocol (skb->protocol), invalid in OUTPUT
 722  * @NFT_META_PRIORITY: packet priority (skb->priority)
 723  * @NFT_META_MARK: packet mark (skb->mark)
 724  * @NFT_META_IIF: packet input interface index (dev->ifindex)
 725  * @NFT_META_OIF: packet output interface index (dev->ifindex)
 726  * @NFT_META_IIFNAME: packet input interface name (dev->name)
 727  * @NFT_META_OIFNAME: packet output interface name (dev->name)
 728  * @NFT_META_IIFTYPE: packet input interface type (dev->type)
 729  * @NFT_META_OIFTYPE: packet output interface type (dev->type)
 730  * @NFT_META_SKUID: originating socket UID (fsuid)
 731  * @NFT_META_SKGID: originating socket GID (fsgid)
 732  * @NFT_META_NFTRACE: packet nftrace bit
 733  * @NFT_META_RTCLASSID: realm value of packet's route (skb->dst->tclassid)
 734  * @NFT_META_SECMARK: packet secmark (skb->secmark)
 735  * @NFT_META_NFPROTO: netfilter protocol
 736  * @NFT_META_L4PROTO: layer 4 protocol number
 737  * @NFT_META_BRI_IIFNAME: packet input bridge interface name
 738  * @NFT_META_BRI_OIFNAME: packet output bridge interface name
 739  * @NFT_META_PKTTYPE: packet type (skb->pkt_type), special handling for loopback
 740  * @NFT_META_CPU: cpu id through smp_processor_id()
 741  * @NFT_META_IIFGROUP: packet input interface group
 742  * @NFT_META_OIFGROUP: packet output interface group
 743  * @NFT_META_CGROUP: socket control group (skb->sk->sk_classid)
 744  * @NFT_META_PRANDOM: a 32bit pseudo-random number
 745  */
 746 enum nft_meta_keys {
 747         NFT_META_LEN,
 748         NFT_META_PROTOCOL,
 749         NFT_META_PRIORITY,
 750         NFT_META_MARK,
 751         NFT_META_IIF,
 752         NFT_META_OIF,
 753         NFT_META_IIFNAME,
 754         NFT_META_OIFNAME,
 755         NFT_META_IIFTYPE,
 756         NFT_META_OIFTYPE,
 757         NFT_META_SKUID,
 758         NFT_META_SKGID,
 759         NFT_META_NFTRACE,
 760         NFT_META_RTCLASSID,
 761         NFT_META_SECMARK,
 762         NFT_META_NFPROTO,
 763         NFT_META_L4PROTO,
 764         NFT_META_BRI_IIFNAME,
 765         NFT_META_BRI_OIFNAME,
 766         NFT_META_PKTTYPE,
 767         NFT_META_CPU,
 768         NFT_META_IIFGROUP,
 769         NFT_META_OIFGROUP,
 770         NFT_META_CGROUP,
 771         NFT_META_PRANDOM,
 772 };
 773
 774 /**
 775  * enum nft_rt_keys - nf_tables routing expression keys
 776  *
 777  * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
 778  * @NFT_RT_NEXTHOP4: routing nexthop for IPv4
 779  * @NFT_RT_NEXTHOP6: routing nexthop for IPv6
 780  */
 781 enum nft_rt_keys {
 782         NFT_RT_CLASSID,
 783         NFT_RT_NEXTHOP4,
 784         NFT_RT_NEXTHOP6,
 785 };
 786
 787 /**
 788  * enum nft_hash_attributes - nf_tables hash expression netlink attributes
 789  *
 790  * @NFTA_HASH_SREG: source register (NLA_U32)
 791  * @NFTA_HASH_DREG: destination register (NLA_U32)
 792  * @NFTA_HASH_LEN: source data length (NLA_U32)
 793  * @NFTA_HASH_MODULUS: modulus value (NLA_U32)
 794  * @NFTA_HASH_SEED: seed value (NLA_U32)
 795  * @NFTA_HASH_OFFSET: add this offset value to hash result (NLA_U32)
 796  */
 797 enum nft_hash_attributes {
 798         NFTA_HASH_UNSPEC,
 799         NFTA_HASH_SREG,
 800         NFTA_HASH_DREG,
 801         NFTA_HASH_LEN,
 802         NFTA_HASH_MODULUS,
 803         NFTA_HASH_SEED,
 804         NFTA_HASH_OFFSET,
 805         __NFTA_HASH_MAX,
 806 };
 807 #define NFTA_HASH_MAX   (__NFTA_HASH_MAX - 1)
 808
 809 /**
 810  * enum nft_meta_attributes - nf_tables meta expression netlink attributes
 811  *
 812  * @NFTA_META_DREG: destination register (NLA_U32)
 813  * @NFTA_META_KEY: meta data item to load (NLA_U32: nft_meta_keys)
 814  * @NFTA_META_SREG: source register (NLA_U32)
 815  */
 816 enum nft_meta_attributes {
 817         NFTA_META_UNSPEC,
 818         NFTA_META_DREG,
 819         NFTA_META_KEY,
 820         NFTA_META_SREG,
 821         __NFTA_META_MAX
 822 };
 823 #define NFTA_META_MAX           (__NFTA_META_MAX - 1)
 824
 825 /**
 826  * enum nft_rt_attributes - nf_tables routing expression netlink attributes
 827  *
 828  * @NFTA_RT_DREG: destination register (NLA_U32)
 829  * @NFTA_RT_KEY: routing data item to load (NLA_U32: nft_rt_keys)
 830  */
 831 enum nft_rt_attributes {
 832         NFTA_RT_UNSPEC,
 833         NFTA_RT_DREG,
 834         NFTA_RT_KEY,
 835         __NFTA_RT_MAX
 836 };
 837 #define NFTA_RT_MAX             (__NFTA_RT_MAX - 1)
 838
 839 /**
 840  * enum nft_ct_keys - nf_tables ct expression keys
 841  *
 842  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)
 843  * @NFT_CT_DIRECTION: conntrack direction (enum ip_conntrack_dir)
 844  * @NFT_CT_STATUS: conntrack status (bitmask of enum ip_conntrack_status)
 845  * @NFT_CT_MARK: conntrack mark value
 846  * @NFT_CT_SECMARK: conntrack secmark value
 847  * @NFT_CT_EXPIRATION: relative conntrack expiration time in ms
 848  * @NFT_CT_HELPER: connection tracking helper assigned to conntrack
 849  * @NFT_CT_L3PROTOCOL: conntrack layer 3 protocol
 850  * @NFT_CT_SRC: conntrack layer 3 protocol source (IPv4/IPv6 address)
 851  * @NFT_CT_DST: conntrack layer 3 protocol destination (IPv4/IPv6 address)
 852  * @NFT_CT_PROTOCOL: conntrack layer 4 protocol
 853  * @NFT_CT_PROTO_SRC: conntrack layer 4 protocol source
 854  * @NFT_CT_PROTO_DST: conntrack layer 4 protocol destination
 855  */
 856 enum nft_ct_keys {
 857         NFT_CT_STATE,
 858         NFT_CT_DIRECTION,
 859         NFT_CT_STATUS,
 860         NFT_CT_MARK,
 861         NFT_CT_SECMARK,
 862         NFT_CT_EXPIRATION,
 863         NFT_CT_HELPER,
 864         NFT_CT_L3PROTOCOL,
 865         NFT_CT_SRC,
 866         NFT_CT_DST,
 867         NFT_CT_PROTOCOL,
 868         NFT_CT_PROTO_SRC,
 869         NFT_CT_PROTO_DST,
 870         NFT_CT_LABELS,
 871         NFT_CT_PKTS,
 872         NFT_CT_BYTES,
 873 };
 874
 875 /**
 876  * enum nft_ct_attributes - nf_tables ct expression netlink attributes
 877  *
 878  * @NFTA_CT_DREG: destination register (NLA_U32)
 879  * @NFTA_CT_KEY: conntrack data item to load (NLA_U32: nft_ct_keys)
 880  * @NFTA_CT_DIRECTION: direction in case of directional keys (NLA_U8)
 881  * @NFTA_CT_SREG: source register (NLA_U32)
 882  */
 883 enum nft_ct_attributes {
 884         NFTA_CT_UNSPEC,
 885         NFTA_CT_DREG,
 886         NFTA_CT_KEY,
 887         NFTA_CT_DIRECTION,
 888         NFTA_CT_SREG,
 889         __NFTA_CT_MAX
 890 };
 891 #define NFTA_CT_MAX             (__NFTA_CT_MAX - 1)
 892
 893 enum nft_limit_type {
 894         NFT_LIMIT_PKTS,
 895         NFT_LIMIT_PKT_BYTES
 896 };
 897
 898 enum nft_limit_flags {
 899         NFT_LIMIT_F_INV = (1 << 0),
 900 };
 901
 902 /**
 903  * enum nft_limit_attributes - nf_tables limit expression netlink attributes
 904  *
 905  * @NFTA_LIMIT_RATE: refill rate (NLA_U64)
 906  * @NFTA_LIMIT_UNIT: refill unit (NLA_U64)
 907  * @NFTA_LIMIT_BURST: burst (NLA_U32)
 908  * @NFTA_LIMIT_TYPE: type of limit (NLA_U32: enum nft_limit_type)
 909  * @NFTA_LIMIT_FLAGS: flags (NLA_U32: enum nft_limit_flags)
 910  */
 911 enum nft_limit_attributes {
 912         NFTA_LIMIT_UNSPEC,
 913         NFTA_LIMIT_RATE,
 914         NFTA_LIMIT_UNIT,
 915         NFTA_LIMIT_BURST,
 916         NFTA_LIMIT_TYPE,
 917         NFTA_LIMIT_FLAGS,
 918         NFTA_LIMIT_PAD,
 919         __NFTA_LIMIT_MAX
 920 };
 921 #define NFTA_LIMIT_MAX          (__NFTA_LIMIT_MAX - 1)
 922
 923 /**
 924  * enum nft_counter_attributes - nf_tables counter expression netlink attributes
 925  *
 926  * @NFTA_COUNTER_BYTES: number of bytes (NLA_U64)
 927  * @NFTA_COUNTER_PACKETS: number of packets (NLA_U64)
 928  */
 929 enum nft_counter_attributes {
 930         NFTA_COUNTER_UNSPEC,
 931         NFTA_COUNTER_BYTES,
 932         NFTA_COUNTER_PACKETS,
 933         NFTA_COUNTER_PAD,
 934         __NFTA_COUNTER_MAX
 935 };
 936 #define NFTA_COUNTER_MAX        (__NFTA_COUNTER_MAX - 1)
 937
 938 /**
 939  * enum nft_log_attributes - nf_tables log expression netlink attributes
 940  *
 941  * @NFTA_LOG_GROUP: netlink group to send messages to (NLA_U32)
 942  * @NFTA_LOG_PREFIX: prefix to prepend to log messages (NLA_STRING)
 943  * @NFTA_LOG_SNAPLEN: length of payload to include in netlink message (NLA_U32)
 944  * @NFTA_LOG_QTHRESHOLD: queue threshold (NLA_U32)
 945  * @NFTA_LOG_LEVEL: log level (NLA_U32)
 946  * @NFTA_LOG_FLAGS: logging flags (NLA_U32)
 947  */
 948 enum nft_log_attributes {
 949         NFTA_LOG_UNSPEC,
 950         NFTA_LOG_GROUP,
 951         NFTA_LOG_PREFIX,
 952         NFTA_LOG_SNAPLEN,
 953         NFTA_LOG_QTHRESHOLD,
 954         NFTA_LOG_LEVEL,
 955         NFTA_LOG_FLAGS,
 956         __NFTA_LOG_MAX
 957 };
 958 #define NFTA_LOG_MAX            (__NFTA_LOG_MAX - 1)
 959
 960 /**
 961  * enum nft_queue_attributes - nf_tables queue expression netlink attributes
 962  *
 963  * @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
 964  * @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
 965  * @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
 966  * @NFTA_QUEUE_SREG_QNUM: source register of queue number (NLA_U32: nft_registers)
 967  */
 968 enum nft_queue_attributes {
 969         NFTA_QUEUE_UNSPEC,
 970         NFTA_QUEUE_NUM,
 971         NFTA_QUEUE_TOTAL,
 972         NFTA_QUEUE_FLAGS,
 973         NFTA_QUEUE_SREG_QNUM,
 974         __NFTA_QUEUE_MAX
 975 };
 976 #define NFTA_QUEUE_MAX          (__NFTA_QUEUE_MAX - 1)
 977
 978 #define NFT_QUEUE_FLAG_BYPASS           0x01 /* for compatibility with v2 */
 979 #define NFT_QUEUE_FLAG_CPU_FANOUT       0x02 /* use current CPU (no hashing) */
 980 #define NFT_QUEUE_FLAG_MASK             0x03
 981
 982 enum nft_quota_flags {
 983         NFT_QUOTA_F_INV         = (1 << 0),
 984 };
 985
 986 /**
 987  * enum nft_quota_attributes - nf_tables quota expression netlink attributes
 988  *
 989  * @NFTA_QUOTA_BYTES: quota in bytes (NLA_U16)
 990  * @NFTA_QUOTA_FLAGS: flags (NLA_U32)
 991  */
 992 enum nft_quota_attributes {
 993         NFTA_QUOTA_UNSPEC,
 994         NFTA_QUOTA_BYTES,
 995         NFTA_QUOTA_FLAGS,
 996         NFTA_QUOTA_PAD,
 997         __NFTA_QUOTA_MAX
 998 };
 999 #define NFTA_QUOTA_MAX          (__NFTA_QUOTA_MAX - 1)
1000
1001 /**
1002  * enum nft_reject_types - nf_tables reject expression reject types
1003  *
1004  * @NFT_REJECT_ICMP_UNREACH: reject using ICMP unreachable
1005  * @NFT_REJECT_TCP_RST: reject using TCP RST
1006  * @NFT_REJECT_ICMPX_UNREACH: abstracted ICMP unreachable for bridge and inet
1007  */
1008 enum nft_reject_types {
1009         NFT_REJECT_ICMP_UNREACH,
1010         NFT_REJECT_TCP_RST,
1011         NFT_REJECT_ICMPX_UNREACH,
1012 };
1013
1014 /**
1015  * enum nft_reject_code - Generic reject codes for IPv4/IPv6
1016  *
1017  * @NFT_REJECT_ICMPX_NO_ROUTE: no route to host / network unreachable
1018  * @NFT_REJECT_ICMPX_PORT_UNREACH: port unreachable
1019  * @NFT_REJECT_ICMPX_HOST_UNREACH: host unreachable
1020  * @NFT_REJECT_ICMPX_ADMIN_PROHIBITED: administratively prohibited
1021  *
1022  * These codes are mapped to real ICMP and ICMPv6 codes.
1023  */
1024 enum nft_reject_inet_code {
1025         NFT_REJECT_ICMPX_NO_ROUTE       = 0,
1026         NFT_REJECT_ICMPX_PORT_UNREACH,
1027         NFT_REJECT_ICMPX_HOST_UNREACH,
1028         NFT_REJECT_ICMPX_ADMIN_PROHIBITED,
1029         __NFT_REJECT_ICMPX_MAX
1030 };
1031 #define NFT_REJECT_ICMPX_MAX    (__NFT_REJECT_ICMPX_MAX - 1)
1032
1033 /**
1034  * enum nft_reject_attributes - nf_tables reject expression netlink attributes
1035  *
1036  * @NFTA_REJECT_TYPE: packet type to use (NLA_U32: nft_reject_types)
1037  * @NFTA_REJECT_ICMP_CODE: ICMP code to use (NLA_U8)
1038  */
1039 enum nft_reject_attributes {
1040         NFTA_REJECT_UNSPEC,
1041         NFTA_REJECT_TYPE,
1042         NFTA_REJECT_ICMP_CODE,
1043         __NFTA_REJECT_MAX
1044 };
1045 #define NFTA_REJECT_MAX         (__NFTA_REJECT_MAX - 1)
1046
1047 /**
1048  * enum nft_nat_types - nf_tables nat expression NAT types
1049  *
1050  * @NFT_NAT_SNAT: source NAT
1051  * @NFT_NAT_DNAT: destination NAT
1052  */
1053 enum nft_nat_types {
1054         NFT_NAT_SNAT,
1055         NFT_NAT_DNAT,
1056 };
1057
1058 /**
1059  * enum nft_nat_attributes - nf_tables nat expression netlink attributes
1060  *
1061  * @NFTA_NAT_TYPE: NAT type (NLA_U32: nft_nat_types)
1062  * @NFTA_NAT_FAMILY: NAT family (NLA_U32)
1063  * @NFTA_NAT_REG_ADDR_MIN: source register of address range start (NLA_U32: nft_registers)
1064  * @NFTA_NAT_REG_ADDR_MAX: source register of address range end (NLA_U32: nft_registers)
1065  * @NFTA_NAT_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1066  * @NFTA_NAT_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1067  * @NFTA_NAT_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1068  */
1069 enum nft_nat_attributes {
1070         NFTA_NAT_UNSPEC,
1071         NFTA_NAT_TYPE,
1072         NFTA_NAT_FAMILY,
1073         NFTA_NAT_REG_ADDR_MIN,
1074         NFTA_NAT_REG_ADDR_MAX,
1075         NFTA_NAT_REG_PROTO_MIN,
1076         NFTA_NAT_REG_PROTO_MAX,
1077         NFTA_NAT_FLAGS,
1078         __NFTA_NAT_MAX
1079 };
1080 #define NFTA_NAT_MAX            (__NFTA_NAT_MAX - 1)
1081
1082 /**
1083  * enum nft_masq_attributes - nf_tables masquerade expression attributes
1084  *
1085  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1086  * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1087  * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1088  */
1089 enum nft_masq_attributes {
1090         NFTA_MASQ_UNSPEC,
1091         NFTA_MASQ_FLAGS,
1092         NFTA_MASQ_REG_PROTO_MIN,
1093         NFTA_MASQ_REG_PROTO_MAX,
1094         __NFTA_MASQ_MAX
1095 };
1096 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)
1097
1098 /**
1099  * enum nft_redir_attributes - nf_tables redirect expression netlink attributes
1100  *
1101  * @NFTA_REDIR_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
1102  * @NFTA_REDIR_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
1103  * @NFTA_REDIR_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
1104  */
1105 enum nft_redir_attributes {
1106         NFTA_REDIR_UNSPEC,
1107         NFTA_REDIR_REG_PROTO_MIN,
1108         NFTA_REDIR_REG_PROTO_MAX,
1109         NFTA_REDIR_FLAGS,
1110         __NFTA_REDIR_MAX
1111 };
1112 #define NFTA_REDIR_MAX          (__NFTA_REDIR_MAX - 1)
1113
1114 /**
1115  * enum nft_dup_attributes - nf_tables dup expression netlink attributes
1116  *
1117  * @NFTA_DUP_SREG_ADDR: source register of address (NLA_U32: nft_registers)
1118  * @NFTA_DUP_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1119  */
1120 enum nft_dup_attributes {
1121         NFTA_DUP_UNSPEC,
1122         NFTA_DUP_SREG_ADDR,
1123         NFTA_DUP_SREG_DEV,
1124         __NFTA_DUP_MAX
1125 };
1126 #define NFTA_DUP_MAX            (__NFTA_DUP_MAX - 1)
1127
1128 /**
1129  * enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
1130  *
1131  * @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
1132  */
1133 enum nft_fwd_attributes {
1134         NFTA_FWD_UNSPEC,
1135         NFTA_FWD_SREG_DEV,
1136         __NFTA_FWD_MAX
1137 };
1138 #define NFTA_FWD_MAX    (__NFTA_FWD_MAX - 1)
1139
1140 /**
1141  * enum nft_gen_attributes - nf_tables ruleset generation attributes
1142  *
1143  * @NFTA_GEN_ID: Ruleset generation ID (NLA_U32)
1144  */
1145 enum nft_gen_attributes {
1146         NFTA_GEN_UNSPEC,
1147         NFTA_GEN_ID,
1148         __NFTA_GEN_MAX
1149 };
1150 #define NFTA_GEN_MAX            (__NFTA_GEN_MAX - 1)
1151
1152 /*
1153  * enum nft_fib_attributes - nf_tables fib expression netlink attributes
1154  *
1155  * @NFTA_FIB_DREG: destination register (NLA_U32)
1156  * @NFTA_FIB_RESULT: desired result (NLA_U32)
1157  * @NFTA_FIB_FLAGS: flowi fields to initialize when querying the FIB (NLA_U32)
1158  *
1159  * The FIB expression performs a route lookup according
1160  * to the packet data.
1161  */
1162 enum nft_fib_attributes {
1163         NFTA_FIB_UNSPEC,
1164         NFTA_FIB_DREG,
1165         NFTA_FIB_RESULT,
1166         NFTA_FIB_FLAGS,
1167         __NFTA_FIB_MAX
1168 };
1169 #define NFTA_FIB_MAX (__NFTA_FIB_MAX - 1)
1170
1171 enum nft_fib_result {
1172         NFT_FIB_RESULT_UNSPEC,
1173         NFT_FIB_RESULT_OIF,
1174         NFT_FIB_RESULT_OIFNAME,
1175         NFT_FIB_RESULT_ADDRTYPE,
1176         __NFT_FIB_RESULT_MAX
1177 };
1178 #define NFT_FIB_RESULT_MAX      (__NFT_FIB_RESULT_MAX - 1)
1179
1180 enum nft_fib_flags {
1181         NFTA_FIB_F_SADDR        = 1 << 0,       /* look up src */
1182         NFTA_FIB_F_DADDR        = 1 << 1,       /* look up dst */
1183         NFTA_FIB_F_MARK         = 1 << 2,       /* use skb->mark */
1184         NFTA_FIB_F_IIF          = 1 << 3,       /* restrict to iif */
1185         NFTA_FIB_F_OIF          = 1 << 4,       /* restrict to oif */
1186 };
1187
1188 #define NFT_OBJECT_UNSPEC       0
1189 #define NFT_OBJECT_COUNTER      1
1190
1191 /**
1192  * enum nft_object_attributes - nf_tables stateful object netlink attributes
1193  *
1194  * @NFTA_OBJ_TABLE: name of the table containing the expression (NLA_STRING)
1195  * @NFTA_OBJ_NAME: name of this expression type (NLA_STRING)
1196  * @NFTA_OBJ_TYPE: stateful object type (NLA_U32)
1197  * @NFTA_OBJ_DATA: stateful object data (NLA_NESTED)
1198  * @NFTA_OBJ_USE: number of references to this expression (NLA_U32)
1199  */
1200 enum nft_object_attributes {
1201         NFTA_OBJ_UNSPEC,
1202         NFTA_OBJ_TABLE,
1203         NFTA_OBJ_NAME,
1204         NFTA_OBJ_TYPE,
1205         NFTA_OBJ_DATA,
1206         NFTA_OBJ_USE,
1207         __NFTA_OBJ_MAX
1208 };
1209 #define NFTA_OBJ_MAX            (__NFTA_OBJ_MAX - 1)
1210
1211 /**
1212  * enum nft_trace_attributes - nf_tables trace netlink attributes
1213  *
1214  * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
1215  * @NFTA_TRACE_CHAIN: name of the chain (NLA_STRING)
1216  * @NFTA_TRACE_RULE_HANDLE: numeric handle of the rule (NLA_U64)
1217  * @NFTA_TRACE_TYPE: type of the event (NLA_U32: nft_trace_types)
1218  * @NFTA_TRACE_VERDICT: verdict returned by hook (NLA_NESTED: nft_verdicts)
1219  * @NFTA_TRACE_ID: pseudo-id, same for each skb traced (NLA_U32)
1220  * @NFTA_TRACE_LL_HEADER: linklayer header (NLA_BINARY)
1221  * @NFTA_TRACE_NETWORK_HEADER: network header (NLA_BINARY)
1222  * @NFTA_TRACE_TRANSPORT_HEADER: transport header (NLA_BINARY)
1223  * @NFTA_TRACE_IIF: indev ifindex (NLA_U32)
1224  * @NFTA_TRACE_IIFTYPE: netdev->type of indev (NLA_U16)
1225  * @NFTA_TRACE_OIF: outdev ifindex (NLA_U32)
1226  * @NFTA_TRACE_OIFTYPE: netdev->type of outdev (NLA_U16)
1227  * @NFTA_TRACE_MARK: nfmark (NLA_U32)
1228  * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32)
1229  * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32)
1230  */
1231 enum nft_trace_attributes {
1232         NFTA_TRACE_UNSPEC,
1233         NFTA_TRACE_TABLE,
1234         NFTA_TRACE_CHAIN,
1235         NFTA_TRACE_RULE_HANDLE,
1236         NFTA_TRACE_TYPE,
1237         NFTA_TRACE_VERDICT,
1238         NFTA_TRACE_ID,
1239         NFTA_TRACE_LL_HEADER,
1240         NFTA_TRACE_NETWORK_HEADER,
1241         NFTA_TRACE_TRANSPORT_HEADER,
1242         NFTA_TRACE_IIF,
1243         NFTA_TRACE_IIFTYPE,
1244         NFTA_TRACE_OIF,
1245         NFTA_TRACE_OIFTYPE,
1246         NFTA_TRACE_MARK,
1247         NFTA_TRACE_NFPROTO,
1248         NFTA_TRACE_POLICY,
1249         NFTA_TRACE_PAD,
1250         __NFTA_TRACE_MAX
1251 };
1252 #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1)
1253
1254 enum nft_trace_types {
1255         NFT_TRACETYPE_UNSPEC,
1256         NFT_TRACETYPE_POLICY,
1257         NFT_TRACETYPE_RETURN,
1258         NFT_TRACETYPE_RULE,
1259         __NFT_TRACETYPE_MAX
1260 };
1261 #define NFT_TRACETYPE_MAX (__NFT_TRACETYPE_MAX - 1)
1262
1263 /**
1264  * enum nft_ng_attributes - nf_tables number generator expression netlink attributes
1265  *
1266  * @NFTA_NG_DREG: destination register (NLA_U32)
1267  * @NFTA_NG_MODULUS: maximum counter value (NLA_U32)
1268  * @NFTA_NG_TYPE: operation type (NLA_U32)
1269  * @NFTA_NG_OFFSET: offset to be added to the counter (NLA_U32)
1270  */
1271 enum nft_ng_attributes {
1272         NFTA_NG_UNSPEC,
1273         NFTA_NG_DREG,
1274         NFTA_NG_MODULUS,
1275         NFTA_NG_TYPE,
1276         NFTA_NG_OFFSET,
1277         __NFTA_NG_MAX
1278 };
1279 #define NFTA_NG_MAX     (__NFTA_NG_MAX - 1)
1280
1281 enum nft_ng_types {
1282         NFT_NG_INCREMENTAL,
1283         NFT_NG_RANDOM,
1284         __NFT_NG_MAX
1285 };
1286 #define NFT_NG_MAX      (__NFT_NG_MAX - 1)
1287
1288 #endif /* _LINUX_NF_TABLES_H */